javascript - How can I change the radius of a particular circle when clicking on a button? -

I have already asked a question that when I click on the circle, to change the scope of a circle, I know this Help

  & lt; G id = "bubble-nodes" & gt; & Lt; Rect id = "bubble-background" & gt; & Lt; / Rect & gt; & Lt; A class = "class =" bubble-node ">  gt; & gt; Circle & gt; & lt; / a & gt; .... & lt; / g >  
 Now, when I click on a button, I am asking, how can I change the radius of a particular circle.  
  button type = " Button "onclick =" resizeparticular circle ('circle_12') "> I & lt; / button & gt; & gt; g id =" bubble-nodes "& gt; & lt; rect id =" bubble-background " & Gt; & lt; / rect & gt; & lt; a class = "class =" bubble-node "& gt; & Lt; Circle r = "65" id = "circle_12" & gt; & Lt; / Circle & gt; & Lt; / A & gt; .... & lt; / G> Var Recije ParticularCrack = Function (id) {// I have not tried working $ $ ('# circle_12') Atri ('r', '85'); // nope}  
 
 In pure javascript / jquery I will probably place a  id  in each circle and give reference that to change another element but I How can I do the same thing in 3? 
 

The id attribute is as follows:

 < Code> circle.attr ('id', function (d, i) {return 'circle_' + i;});  

Or set square:

  circle.attr ('class', function (d, i) {if (i === 12) { Return 'Special Chakra';} and {Return 'General Circle';}});